Robbie Williams dismisses radio proposal to girlfriend Ayda Field as a 'joke'... but someone forgot to tell his mum

And Robbie Williams was up to his old tricks again yesterday as he shocked fans by proposing to his long-term girlfriend live on an Australian radio station.

The former Take That star was on the Kyle and Jackie O breakfast show on Sydney's 2DayFM today to promote his album Reality Killed the Video Star when he suddenly called Ayda, 30, into the studio to sit with him.

Happy couple: Robbie Williams and Ayda Field, seen here in Sydney, Australia yesterday, appeared to get engaged on a radio show but claim it was a joke

Host Jackie Henderson asked 35-year-old Robbie: 'Sydney has a bit of
a reputation for proposals with celebrities, is there any news you want
to share?'

Robbie then turned to Ayda, who he has been dating for two years and
said: 'Is there anyone you want to get married to?' before asking, Will you marry me?'

Ayda said yes instantly and the singer added: 'I love you so much. Would you be my betrothed until the end of time?'

Popping the question: Robbie made the joke during an interview with Australian radio presenter Jackie O

She replied: 'I would love to be your betrothed 'til the end of
time,' before he presented her with a ring handed to him by Henderson.

Following the 'proposal', Robbie's shocked fans started ringing into the show to congratulate the couple.

However, Williams' manager later told the Daily Mail that it was
done as a joke following suggestions it was a stunt which was set up
prior to the radio show.

Jackie and co-host Kyle Sandilands had posted a message on their
Twitter page earlier this week saying that Robbie was coming into the
studio and he 'had a little surprise up his sleeve' for Ayda.

His spokesman confirmed: 'He did say it, but he did it in a jocular manner. They are not engaged.'

But someone should maybe share the news with Robbie's mother Jan Williams.

Jan spoke to BBC Radio 5 live today and CONFIRMED the engagement.

She said: 'Yes, you caught me shopping. I'm looking for a card... a celebration card.' Asked if it's an engagement card she is buying, she said: 'Exactly, yes.' The presenter then asked her if she can confirm reports that Ayda and Robbie are engaged.